Which of the following is TRUE?
A) Natural sources of air pollution are not a concern in terms of human health.
B) Though infrequent, natural events that produce air pollution may cover large areas.
C) There is no reason to be concerned about natural sources of air pollution.
D) Natural sources of air pollution are a relatively new occurrence.
B
You might also like to view...
Why does Basaltic magma have the lowest viscosity?
A) Basaltic lava has more silicate. B) Basaltic lava has less silicate. C) Basaltic lava is hotter than other flows. D) Basaltic lava is less hot than other flows.
In Queensland, Australia, cactus moths ________
A) effectively cleared non-native prickly pear cactus from rangeland B) are raised as a food source by native Aborigines C) are an invasive species D) are examples of species that have developed resistance to pesticides E) are a keystone species
It is easier to remove an invasive species than it is to control its introduction.
Answer the following statement true (T) or false (F)
Mass wasting is the direct result of physical and chemical weathering.
Answer the following statement true (T) or false (F)